Solution
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Step 87 of 659
(core step)
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157


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Step 114 of 659
(core step)
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160


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163


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166


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169


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172


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Step 145 of 659
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175


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178


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181


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184


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184


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192


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195


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198


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201


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204


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207


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Step 199 of 659
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210


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213


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216


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219


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222


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227


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230


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233


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Step 263 of 659
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239


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242


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248


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251


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251


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Step 283 of 659
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264


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0


Step 302 of 659
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267


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270


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273


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276


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279


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279


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0


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287


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287


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292


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289


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292


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295


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0


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298


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301


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0


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0


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304


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313


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0


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0


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313


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0


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0


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321


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321


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324


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327


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330


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327


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324


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0


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0


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327


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330


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0


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333


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336


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0


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0


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339


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342


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345


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0


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0


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348


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0


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0


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351


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354


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0


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0


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0


Step 453 of 659
(core step)
------------
357


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(core step)
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360


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357


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(core step)
------------
354


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0


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0


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0


Step 469 of 659
(core step)
------------
357


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(core step)
------------
360


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0


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0


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0


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0


Step 483 of 659
(core step)
------------
363


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0


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0


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0


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0


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0


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0


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------------
360


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0


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0


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363


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0


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0


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366


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369


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0


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0


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372


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375


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0


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0


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0


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0


Step 536 of 659
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------------
389


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0


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0


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(core step)
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392


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395


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398


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401


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404


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404


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404


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0


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